GAP insurance explained: covering the gap when your car is written off
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Quick answer: GAP (Guaranteed Asset Protection) insurance covers the difference between your car's insurance payout and what you still owe on finance — or its original purchase price — if the car is written off or stolen.
If your car is written off, standard comprehensive insurance pays its current market value — which may be far less than what you owe on finance or what you paid. GAP insurance covers that difference. It is most relevant for new cars on finance, where depreciation can outpace loan repayments for the first few years.
Types of GAP insurance
Finance GAP: pays the difference between your insurer's payout and the outstanding finance balance. Essential if you owe more than the car's value.
Return-to-invoice (RTI) GAP: pays the difference between the payout and the original purchase price. Useful for new cars that depreciate quickly.
Vehicle replacement GAP: pays the difference between the payout and the cost of an equivalent new car.
When GAP insurance is worth it
Most valuable for new cars on finance, especially with low deposits where negative equity is likely in the first two to three years.
Less useful for older cars, cash purchases, or situations where the car's value exceeds the finance balance.
Buying GAP insurance
Dealers often sell GAP at the point of car purchase — often overpriced. You can buy standalone GAP from insurers and comparison sites, usually for less.
FCA rules require dealers to give you a two-day pause before selling add-on insurance at the point of sale, giving you time to compare.
Common questions
Is GAP insurance mandatory?
No. It is optional. No lender requires GAP insurance as a condition of car finance, though dealers may present it as essential.
Does GAP insurance cover mechanical breakdown?
No. GAP only applies when the car is written off or stolen. Mechanical failures are covered by warranty or breakdown cover, not GAP.
Can I cancel GAP insurance?
Yes. You can usually cancel within 30 days for a full refund. After that, you receive a pro-rata refund minus any claims paid.